Process for preparing optically active carboxylic acid

Details Process for preparing optically active carboxylic acid Process for preparing optically active carboxylic acid

1993-09-30

1994-08-02

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562433, 562450, 562606, C07C 5502, C07C22912, C07B 5300

Patent

active

053347587

ABSTRACT:
A process for preparing an optically active carboxylic acid is disclosed, comprising asymmetric hydrogenation of an .alpha.,.beta.-unsaturated carboxylic acid using an alcohol as a hydrogen donor in the presence of a metal-optically active phosphine complex. A carboxylic acid having high optical purity can easily be obtained in a high yield without using specific equipment as required in using hydrogen gas as a hydrogen donor.

REFERENCES:
patent: 4962230 (1990-10-01), Takaya et al.
patent: 5087728 (1992-02-01), Nohira et al.
patent: 5107053 (1992-04-01), Wu
Breger et al., Chemical Reviews, vol. 74, No. 5, pp. 567-580 (1974).

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